Chapter 12: Improvement in Food Resources Application Questions | science Class 9 CBSE

ByteNotes

Chapter 12: Improvement in Food Resources Application Questions | science Class 9 CBSE | ByteNotes.in

Application Question

Concept in a practical situation

Application

Question 1

Applied Concept

Q1. Why is it necessary to increase food production in India?

Due to growing population and rising demand.
Limited cultivable land and water resources.
To ensure food security for all citizens.
Prevent malnutrition and hunger.
Support national economic development.

ByteNotes

Application Question

Concept in a practical situation

Application

Question 2

Applied Concept

Q2. Explain three methods of crop improvement.

Crop variety improvement: via hybridisation and genetic modification.
Crop production improvement: better techniques and inputs.
Crop protection management: from pests, weeds, and diseases.
These methods increase yield and stability.
Must be environmentally sustainable.

ByteNotes

Application Question

Concept in a practical situation

Application

Question 3

Applied Concept

Q3. State the differences between intercropping and mixed cropping.

Intercropping: alternate rows of different crops | Mixed cropping: sown together randomly.
Intercropping reduces competition and allows nutrient sharing.
Mixed cropping offers risk reduction and stable yield.
Intercropping improves pest management.
Intercropping allows mechanized harvesting in some cases.

ByteNotes

Application Question

Concept in a practical situation

Application

Question 4

Applied Concept

Q4. List the major nutrients required by plants and their sources.

Macronutrients: Nitrogen (N), Phosphorus (P), Potassium (K).
Sources: N – Urea, P – Super phosphate, K – Potash.
Also need Ca, Mg, S in moderate amounts.
Micronutrients include Zn, Fe, Mn.
Balance of all essential nutrients improves plant health.

ByteNotes

Application Question

Concept in a practical situation

Application

Question 5

Applied Concept

Q5. What are the harmful effects of overusing fertilizers?

Reduces long-term soil fertility.
Kills beneficial microbes and worms.
Causes water pollution through runoff.
Increases soil salinity and hardness.
Affects human health via food chain residues.

ByteNotes

Application Question

Concept in a practical situation

Application

Question 6

Applied Concept

Q6. Define organic farming and state its benefits.

Farming using natural compost, manure, biopesticides.
Avoids synthetic fertilizers and pesticides.
Improves soil texture and fertility.
Yields safe, chemical-free food.
Eco-friendly and sustainable.

ByteNotes

Premium Access

Unlock all Application Questions

You are viewing 6 free application questions from this chapter. Upgrade to Premium to unlock the remaining 9 questions.

Upgrade to Premium9 questions locked

Chapter sections

Chapter 12: Improvement in Food Resources | Application Questions

Q1. Why is it necessary to increase food production in India?

Q2. Explain three methods of crop improvement.

Q3. State the differences between intercropping and mixed cropping.

Q4. List the major nutrients required by plants and their sources.

Q5. What are the harmful effects of overusing fertilizers?

Q6. Define organic farming and state its benefits.

Unlock all Application Questions